# US 11,028,766 B2 · Method of operating a motor vehicle and motor vehicle

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- Number: US 11,028,766 B2
- Document ID: US11028766B2
- Status: Granted
- Kind: B2
- Application number: 16/504,063
- Filed: 2019-07-05
- Published: 2020-01-09
- Granted: 2021-06-08
- Earliest claimed: 2018-07-05
- Assignees: Volkswagen Aktiengesellschaft
- Applicants: Volkswagen Aktiengesellschaft
- Inventors: Javier Bartolome; Manuel Vahldiek; Dirk Hagelstein; Arne Staats
- Web page: https://patentgrep.com/patent/US11028766B2

## CPC

- F02B 37/225: {air passages}
- F02B 37/24: by using pumps or turbines with adjustable guide vanes
- F02D 41/0007: {for control of turbo-charged or super-charged engines (control of the pumps per se F02B37/12)}
- F02D 41/023: {in relation with the gear ratio shifting (conjoint control for improving gear change B60W30/19)}
- F02M 26/06: Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream of the compressor
- F04D 25/024: {the driving means being assisted by a power recovery turbine}
- F04D 27/0253: {by throttling (F04D27/0246 takes precedence)}
- F04D 29/4213: {suction ports}
- F04D 29/464: {adjusting flow cross-section, otherwise than by using adjustable stator blades}
- F02B 2037/125: {Control for avoiding pump stall or surge}
- F02D 2041/223: {Diagnosis of fuel pressure sensors}
- F05D 2220/40: in turbochargers
- F05D 2250/51: Inlet
- Y02T 10/12: Improving ICE efficiencies
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W)
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A method of operating a motor vehicle having an internal combustion engine, wherein the internal combustion engine has at least one combustion engine which is connected by a rotary drive via a transmission and optionally a clutch with powered wheels of the motor vehicle, and further comprises a fresh gas line, and wherein in the fresh gas line, a compressor is integrated, which is associated with a trim controller, by means of which an edge-side portion of the inlet cross section of a compressor impeller of the compressor is coverable to a variable extent. In this case, in a release position of the trim controller, the edge-side portion of the inlet cross section is covered relatively little, preferably the least possible, and in a covering position of the trim controller, is mostly covered, preferably as much as possible.

## Claims

### Claim 1

A method for operating a motor vehicle having an internal combustion engine system, the method comprising:
operating an engine that is connectable by a rotary drive to wheels of the motor vehicle via a transmission;
compressing fresh gas via a compressor being integrated in a fresh gas line,
wherein the compressor is associated with a trim controller, and via the trim controller, an edge-side portion of an inlet cross section of a compressor impeller of the compressor is covered to a variable extent; and
wherein in a release position of the trim controller, the edge-side portion of the inlet cross section is covered to a lesser extent than when the trim controller is in a covering position; and
adjusting the trim controller from the release position to the covering position, via an engine control unit, when the engine transitions from a first operating state in which the transmission is in a first gear ratio shift position to a second operating state in which the transmission is in a second gear ratio shift position.

### Claim 2 (depends on 1)

The method according to claim 1, wherein said adjusting the trim controller from the release position to the covering position further includes:
uncovering the edge-side portion of the inlet cross section in the release position; and
uncovering the edge-side portion of the inlet cross in the covering position.

### Claim 3 (depends on 1)

The method according to claim 1, further comprising at least one of:
adjusting the trim controller from the covering position to the release position when the engine is operated in the second operating state with a load beyond a defined limit; and
maintaining the trim controller in the covering position when the engine is operated in the second operating state with at most one load corresponding to the defined limit.

### Claim 4 (depends on 3)

The method according to claim 3, further comprising resetting the trim controller to the release position when a value of a mass flow of the fresh gas through the compressor corresponds to a value immediately prior to the transition and/or the value of the mass flow is at a defined distance from a surge line of the compressor.

### Claim 5

A motor vehicle comprising:
an internal combustion engine system including:
an engine, which is connected by a rotary drive via a transmission with wheels of the motor vehicle;
a fresh gas line;
a compressor integrated in the fresh gas line;
a trim controller associated with the compressor,
wherein via the trim controller, an edge-side portion of an inlet cross section of a compressor impeller of the compressor is covered to a varying extent; and
wherein in a release position of the trim controller, the edge-side portion of the inlet cross section is covered to a lesser extent than when the trim controller in a covering position; and
a control device configured for an automated execution of:
operating the engine that is connected by the rotary drive via the transmission with the wheels of the motor vehicle;
compressing fresh gas via the compressor integrated in the fresh gas line; and
adjusting the trim controller from the release position to the covering position when the engine transitions from a first operating state in which the transmission is in a first gear ratio shift position to a second operating state in which the transmission is in a second gear ratio shift position.

### Claim 6 (depends on 5)

The motor vehicle according to claim 5, wherein the trim controller comprises an annular diaphragm.